The product is currently the only FDA-approved over-the-counter inhaler and is being taken off the shelves because it uses something called chlorofluorocarbons CFCs as a propellant -- the substance is considered harmful to the ozone layer.

D. Scientists believe that this gradual warming is the result of industrialization, the production of aerosols (the so-called chlorofluorocarbons), the utilization of fuels derived from petroleum, irrigation of crops and the manufacture of cement.

Then, when it was discovered that certain chemicals called chlorofluorocarbons (CFCs) were causing the depletion of ozone in the atmosphere, the same groups launched a nasty campaign to discredit that science, too.

The false analogy is that we were talking about chlorofluorocarbons, which is a very small number of gases produced by a limited number of producers in a small number of countries, and gases for which there were, by the time the protocol was brought into force, viable alternatives.